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Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Apr. 30, 2013 Employee	Jun. 30, 2013 Subsequent Event [Member] Employee	Jun. 30, 2013 Subsequent Event [Member] Maximum [Member]	Jun. 30, 2013 Subsequent Event [Member] Minimum [Member]
Subsequent Event (Textual) [Abstract]
Reduction in workforce as part of restructuring plan	8.00%	22.00%
Expected number of employees reduced under restructuring plan	55	137
Restructuring Charges			$ 4.6	$ 4.1

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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